After reading the "Home Partition How To", I created 6 partitions:

hdf1: 50M
hdf5: 1G
hdf6: 256M
hdf7: 1G
hdf8: 5G
hdf9: 3G

Then I installed "Knoppix" in hdf6 and hdf8.

Afterwards I made this:

/dev/hdf1 /boot
/dev/hdf5 empty
/dev/hdf6 /swap
/dev/hdf7 /var
/dev/hdf8 /
/dev/hdf9 /home

... and modified "fstab". It worked.

Now I'd like to have this:

/dev/hdf5 /
/dev/hdf8 /usr

I tried... I made 'mv usr/*. ' in /mnt/hdf8. But I had big problems after rebooting with the floppy disk.

Maybe the procedure is not really good.

Thanks in advance.